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J1coding
fd92b8eaea
The detached Universal TXM worker thread can still be stuck in brk #0xf00d when the main thread falls back to legacy brk #0x69. Previously the old SIGTRAP handler was restored immediately after the legacy path, so a late trap from the worker hit the default handler and killed the process. Move the sigaction restore to AFTER vm_remap + mprotect complete, and add it to every error-return path. This keeps our handler installed during the entire allocation so late worker traps are caught safely.